On June 25, 2026, the Supreme Court reversed the Missouri Court of Appeals’ decision allowing state-law liability for failing to add a carcinogen warning to an EPA-approved pesticide label. The decision was a victory for Washington Legal Foundation (WLF), which joined the U.S. Chamber of Commerce, the American Chemistry Council, the Pharmaceutical Research and Manufacturers of America, and the Product Liability Advisory Council on an amicus brief urging reversal.